Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd94102b6723bff2…

MALICIOUS

PDF

44.1 KB Created: 2020-08-04 17:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59dd4563044eec3892b3d84b7f38c916 SHA-1: 2b617e10ed6c4a5b0a89c092c9086fa39a7136e6 SHA-256: fd94102b6723bff29d931c2d0d34166ce86fee25ba4e0ef3919dc9e41ce7ffb1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link and a large number of embedded links, suggesting an attempt to manipulate search engine results or redirect users to malicious sites. The document body text and embedded URLs indicate a lure related to 'convert base64 to pdf jquery', likely a pretext to drive traffic to the malicious redirector.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=convert+base64+to+pdf+jquery
    • http://files.woodlandscubscouts.com/uploads/1/3/1/6/131606819/2390789.pdf
    • http://files.manilavanrentals.com/uploads/1/3/0/7/130775828/9127812.pdf
    • http://files.dkgindiana.org/uploads/1/3/0/7/130775509/e31d61.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/fidelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/98472900368.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/clone_sd_card.pdf
    • https://cdn.shopify.com/s/files/1/0437/8407/7473/files/7294814459.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/vifatobevefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2797/1741/files/53872273033.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/zoworebozap.pdf
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/alexander_rybak_fariytale.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/34382670392.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/zomarumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6867/0620/files/41846212976.pdf
    • https://cdn.shopify.com/s/files/1/0435/0712/2342/files/91607410890.pdf
    • https://cdn.shopify.com/s/files/1/0430/9775/1709/files/10709350117.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea9.bin
6603244512447d5d4722f87aca4d7e4a47eb0c896a561d5036ab78133e6e1da3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA9 5656 bytes
font_01_sfnt_off00007208.bin
197a1e117c7cb6c752e81e4840815a29521546ddef33634445d6fa1462231621		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7208 15424 bytes

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